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公开(公告)号：US06443273B1
公开(公告)日：2002-09-03
申请号：US09939127
申请日：2001-08-24
申请人： Timothy K. Ledbetter , Brad Stamps , David Popelka , Christopher M. Bothwell , Michael Reaugh Smith
发明人： Timothy K. Ledbetter , Brad Stamps , David Popelka , Christopher M. Bothwell , Michael Reaugh Smith
IPC分类号： B64D4700
CPC分类号： B64C27/001 , B64C2027/005 , F16F7/116
摘要： The present invention relates to an improved vibration cancellation device designed to overcome many of the shortcomings inherent in prior devices. In many embodiments, the vibration cancellation device is smaller in scale than prior designs, facilitating more versatility with respect to design options. The device of the present invention achieves a smaller size partly due to the use of suspension springs having an offset, rather than a parallel arrangement.
摘要翻译： 本发明涉及一种设计用于克服现有设备中固有的许多缺点的改进的减震装置。 在许多实施例中，振动消除装置的规模比现有设计小，有助于相对于设计选项的更多的通用性。 本发明的装置部分地由于使用具有偏移而不是平行布置的悬架弹簧而实现较小的尺寸。
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公开(公告)号：US08181755B2
公开(公告)日：2012-05-22
申请号：US10568170
申请日：2004-08-27
申请人： Frank B. Stamps , David A. Popelka , Michael R. Smith , Christopher M. Bothwell , Lawrence M. Corso , James L. Braswell, Jr. , Ernst C. Schellhase , Charles L. Hollimon , Thomas J. Newman , Bryan Baskin , Thomas C. Campbell , Daniel B. Robertson
发明人： Frank B. Stamps , David A. Popelka , Michael R. Smith , Christopher M. Bothwell , Lawrence M. Corso , James L. Braswell, Jr. , Ernst C. Schellhase , Charles L. Hollimon , Thomas J. Newman , Bryan Baskin , Thomas C. Campbell , Daniel B. Robertson
摘要： A damper has a piston having an axis, an outer surface, and opposing ends. Elastomeric seals are in sealing contact with the outer surface of the piston, the seals being coaxial with the piston and limiting movement of the piston to a path along the axis of the piston. The seals also define fluid chambers adjacent the ends of the piston. A primary passage communicates the fluid chambers, and a selectively switchable valve for controls a flow of fluid from one of the chambers to another of the chambers through the primary passage. When the flow of fluid through the primary passage is permitted, movement of the piston is resisted by a first spring rate due to a shear force required to cause shear deflection of the seals. When the flow of fluid through the primary passage is restricted, movement of the piston is resisted by a second spring rate due to a fluid force required to cause bulging deflection of the seals.
摘要翻译： 阻尼器具有具有轴线，外表面和相对端的活塞。 弹性密封件与活塞的外表面密封接触，密封件与活塞同轴并且限制活塞沿着活塞轴线的路径运动。 密封件还限定了邻近活塞端部的流体室。 主要通道连通流体室，以及可选择地可切换的阀，用于控制通过主通道从一个室到另一个腔的流体流。 当允许通过主通道的流体流动时，活塞的运动由于需要剪切力而引起密封件的剪切偏转而抵抗第一弹簧刚度。 当通过主通道的流体流被限制时，活塞的运动由于需要使密封件凸起偏转所需的流体力而受到第二弹簧刚度的抵抗。
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公开(公告)号：US08857581B2
公开(公告)日：2014-10-14
申请号：US13461414
申请日：2012-05-01
申请人： Frank B. Stamps , Michael R. Smith , Christopher M. Bothwell , Lawrence M. Corso , James L. Braswell, Jr. , David A. Popelka , Ernst C. Schellhase , Charles L. Hollimon , Thomas J. Newman , Bryan Baskin , Thomas C. Campbell , Daniel B. Robertson
发明人： Frank B. Stamps , Michael R. Smith , Christopher M. Bothwell , Lawrence M. Corso , James L. Braswell, Jr. , David A. Popelka , Ernst C. Schellhase , Charles L. Hollimon , Thomas J. Newman , Bryan Baskin , Thomas C. Campbell , Daniel B. Robertson
IPC分类号： F16F9/00 , F16F13/26 , B64C27/39 , B64C27/51 , B64C27/35 , F16F13/24 , F16F13/08 , F16D65/14
摘要： A rotor hub and method to dampen a force exerted on a rotor hub by a rotor blade during flight. The rotor hub including a central member rotatably coupled to a rotor mast, a blade grip rigidly attached to a blade and movably coupled to the central member, and an adjustable damper operably associated with the blade grip. The method includes damping the force exerted on the rotor hub with the adjustable damper and selectively adjusting the adjustable damper between a first spring rate and a second spring rate.
摘要翻译： 转子轮毂和在飞行期间通过转子叶片抑制施加在转子毂上的力的方法。 转子毂包括可旋转地联接到转子桅杆的中心构件，刚性地附接到叶片并可移动地联接到中心构件的叶片把手以及可操作地与叶片把手相关联的可调节阻尼器。 该方法包括利用可调节阻尼器来减轻施加在转子毂上的力，并且在第一弹簧刚度和第二弹簧刚度之间选择性地调整可调节阻尼器。
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公开(公告)号：US20120230823A1
公开(公告)日：2012-09-13
申请号：US13461414
申请日：2012-05-01
申请人： Frank B. Stamps , Michael R. Smith , Christopher M. Bothwell , Lawrence M. Corso , James L. Braswell, JR. , David A. Popelka , Ernst C. Schellhase , Charles L. Hollimon , Thomas J. Newman , Bryan Baskin , Thomas C. Campbell , Daniel B. Robertson
发明人： Frank B. Stamps , Michael R. Smith , Christopher M. Bothwell , Lawrence M. Corso , James L. Braswell, JR. , David A. Popelka , Ernst C. Schellhase , Charles L. Hollimon , Thomas J. Newman , Bryan Baskin , Thomas C. Campbell , Daniel B. Robertson
IPC分类号： B64C11/12
摘要： A rotor hub and method to dampen a force exerted on a rotor hub by a rotor blade during flight. The rotor hub including a central member rotatably coupled to a rotor mast, a blade grip rigidly attached to a blade and movably coupled to the central member, and an adjustable damper operably associated with the blade grip. The method includes damping the force exerted on the rotor hub with the adjustable damper and selectively adjusting the adjustable damper between a first spring rate and a second spring rate.
摘要翻译： 转子轮毂和在飞行期间通过转子叶片抑制施加在转子毂上的力的方法。 转子毂包括可旋转地联接到转子桅杆的中心构件，刚性地附接到叶片并可移动地联接到中心构件的叶片把手以及可操作地与叶片把手相关联的可调节阻尼器。 该方法包括利用可调节的阻尼器来减轻施加在转子毂上的力，并且在第一弹簧刚度和第二弹簧刚度之间选择性地调整可调阻尼器。
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公开(公告)号：US07828525B2
公开(公告)日：2010-11-09
申请号：US10567886
申请日：2004-08-27
申请人： Frank B. Stamps , Michael R. Smith , Christopher M. Bothwell , Lawrence M. Corso , James L. Braswell, Jr. , David A. Popelka , Ernst C. Schellhase , Charles L. Hollimon , Thomas J. Newman , Bryan Baskin , Thomas C. Campbell , Daniel B. Robertson
发明人： Frank B. Stamps , Michael R. Smith , Christopher M. Bothwell , Lawrence M. Corso , James L. Braswell, Jr. , David A. Popelka , Ernst C. Schellhase , Charles L. Hollimon , Thomas J. Newman , Bryan Baskin , Thomas C. Campbell , Daniel B. Robertson
IPC分类号： B64C27/51
摘要： A rotor hub assembly for a rotary-wing aircraft has a central member and a plurality of blade grips adapted for attaching rotor blades to the central member. The blade grips are pivotally attached to the central member and are capable of pivoting about a pivot axis generally normal to a plane of rotation of the blades. The pivoting allows for in-plane motion of the blades relative to the central member. A damper is operably connected to each blade grip for damping the in-plane motion of the associated blade, each damper being selectively switchable between at least two spring rates.
摘要翻译： 用于旋转翼飞行器的转子轮毂组件具有中心构件和适于将转子叶片附接到中心构件的多个叶片把手。 刀片夹具可枢转地附接到中心构件并且能够围绕大致垂直于叶片的旋转平面的枢转轴线枢转。 枢转允许叶片相对于中心构件的面内运动。 阻尼器可操作地连接到每个叶片夹持件，用于阻尼相关叶片的平面内运动，每个阻尼器可在至少两个弹簧刚度之间切换。
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公开(公告)号：US20080247876A1
公开(公告)日：2008-10-09
申请号：US10567886
申请日：2004-08-27
申请人： Frank B. Stamps , Michael R. Smith , Christopher M. Bothwell , Lawrence M. Corso , James L. Braswell , David A. Popelka , Ernst C. Schellhase , Charles L Hollimon , Thomas J. Newman , Bryan Baskin , Thomas C. Campbell , Daniel B. Robertson
发明人： Frank B. Stamps , Michael R. Smith , Christopher M. Bothwell , Lawrence M. Corso , James L. Braswell , David A. Popelka , Ernst C. Schellhase , Charles L Hollimon , Thomas J. Newman , Bryan Baskin , Thomas C. Campbell , Daniel B. Robertson
摘要： A rotor hub assembly for a rotary-wing aircraft has a central member and a plurality of blade grips adapted for attaching rotor blades to the central member. The blade grips are pivotally attached to the central member and are capable of pivoting about a pivot axis generally normal to a plane of rotation of the blades. The pivoting allows for in-plane motion of the blades relative to the central member. A damper is operably connected to each blade grip for damping the in-plane motion of the associated blade, each damper being selectively switchable between at least two spring rates.
摘要翻译： 用于旋转翼飞行器的转子轮毂组件具有中心构件和适于将转子叶片附接到中心构件的多个叶片把手。 刀片夹具可枢转地附接到中心构件并且能够围绕大致垂直于叶片的旋转平面的枢转轴线枢转。 枢转允许叶片相对于中心构件的面内运动。 阻尼器可操作地连接到每个叶片夹持件，用于阻尼相关叶片的平面内运动，每个阻尼器可在至少两个弹簧刚度之间切换。
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